LEVASSEUR, Alain; PECQUENARD, Brigitte; REDDY, V. Venkatashamy; VINATIER, Philippe

doi:10.1021/jp0565554

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LEVASSEUR, Alain
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

PECQUENARD, Brigitte
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

REDDY, V. Venkatashamy
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Journal of Physical Chemistry B. 2006, vol. 110, n° 9, p. 4301-4306

American Chemical Society

Résumé en anglais

Lithium nickel vanadate thin films were prepared by radio frequency magnetron sputtering at various substrate temperatures (Ts). These thin films have been investigated as anode electrode material in the use of microbatteries. Films were characterized by Rutherford backscattering spectroscopy, nuclear reaction analysis, Auger electron spectroscopy, glancing-incidence X-ray diffraction analysis, Raman spectroscopy, scanning electron microscopy, atomic force microscopy, and high-resolution transmission electron microscopy techniques. The anodic electrochemical performances of the films have been evaluated by cyclic voltammetry at a scan rate of 1 mV/s and by galvanostatic cycling, with lithium metal as the counter and the reference electrode, and cycled in the range of 0.02-3.0 V at a current density of 75 A/cm2. Thin films prepared at a Ts of 650 C show a discharge capacity at the 20th cycle of 1100 (±10) mAh/g, which exhibited excellent capacity retention with a small capacity fade.< Réduire

Mots clés en anglais

LiMn2O4 thin films

Lithium ion batteries

Positive electrode

Anode materials

LiNiVO4

Nanotubes

Oxides

Behavior

SnO2

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Effect of substrate temperature on morphology and electrochemical performance of radio frequency magnetron sputtered lithium nickel vanadate films used as negative electrodes for lithium microbatteries

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